Methods and appratus for characterizing media
US8060372B2 · kind B2 · utility
29Cited by
35References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2008 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Aug 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H20/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for characterizing media are described. In one example, a method of characterizing media includes capturing a block of audio; converting at least a portion of the block of audio into a frequency domain representation including a plurality of complex-valued frequency components; defining a band of complex-valued frequency components for consideration; determining a decision metric using the band of complex-valued frequency components; and determining a signature bit based on a value of the decision metric. Other examples are shown and described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.